Classifications

• • G—PHYSICS
  • G11—INFORMATION STORAGE
  • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
  • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
  • G11B7/007—Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track
  • G11B7/00736—Auxiliary data, e.g. lead-in, lead-out, Power Calibration Area [PCA], Burst Cutting Area [BCA], control information
• • G—PHYSICS
  • G11—INFORMATION STORAGE
  • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
  • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
  • G11B7/007—Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track
• • G—PHYSICS
  • G11—INFORMATION STORAGE
  • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
  • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
  • G11B20/10—Digital recording or reproducing
  • G11B20/18—Error detection or correction; Testing, e.g. of drop-outs
  • G11B20/1883—Methods for assignment of alternate areas for defective areas
• • G—PHYSICS
  • G11—INFORMATION STORAGE
  • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
  • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
  • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
  • G11B27/19—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
  • G11B27/28—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording
  • G11B27/32—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on separate auxiliary tracks of the same or an auxiliary record carrier
  • G11B27/327—Table of contents
  • G11B27/329—Table of contents on a disc [VTOC]
• • G—PHYSICS
  • G11—INFORMATION STORAGE
  • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
  • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
  • G11B7/007—Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track
  • G11B7/00745—Sectoring or header formats within a track
• • G—PHYSICS
  • G11—INFORMATION STORAGE
  • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
  • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
  • G11B20/10—Digital recording or reproducing
  • G11B20/18—Error detection or correction; Testing, e.g. of drop-outs
  • G11B2020/1873—Temporary defect structures for write-once discs, e.g. TDDS, TDMA or TDFL
• • G—PHYSICS
  • G11—INFORMATION STORAGE
  • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
  • G11B2220/00—Record carriers by type
  • G11B2220/20—Disc-shaped record carriers
• • G—PHYSICS
  • G11—INFORMATION STORAGE
  • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
  • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
  • G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
  • G11B7/005—Reproducing
  • G11B7/0053—Reproducing non-user data, e.g. wobbled address, prepits, BCA
• • G—PHYSICS
  • G11—INFORMATION STORAGE
  • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
  • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
  • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
  • G11B7/2403—Layers; Shape, structure or physical properties thereof
  • G11B7/24035—Recording layers
  • G11B7/24038—Multiple laminated recording layers

Definitions

• the present invention relates to a recording medium having a data structure for managing at least a data area of the recording medium as well as methods and apparatuses for reproduction and recording.
• BD blu-ray disc
• HD-DVD next-generation HD-DVD technology
• BD-RE Blu-ray Disc
• BD-WO BD Write Once disc
• the recording medium according to the present invention includes a data structure for managing at least a data area of the recording medium.
• a temporary defect management area of the recording medium stores a first data block that includes a space bit map and a temporary definition structure.
• the space bit map indicates recordation status of the data area, and the temporary definition structure provides a first pointer to the space bit map.
• the space bit map indicates the recordation status of the data area on a recording unit by recording unit basis.
• a recording unit may be a cluster.
• the temporary definition structure may also provide a second pointer to a temporary defect list stored in a second data block in the temporary management area.
• the temporary defect list at least indicates defective portions of the data area.
• the first pointer of the temporary definition structure may indicate a first physical sector number of the space bit map and the second pointer may indicate a first physical sector number of the temporary defect list. More specifically though, the first and second pointers identify a most current space bit map and a most current temporary defect list as of when the temporary definition structure is recorded.
• the present invention further provides apparatuses and methods for recording and reproducing the data structure according to the present invention. Brief Description of the Drawings
• Fig. 1 illustrates a single-layer write once optical disc according to an example embodiment of the present invention.
• Fig. 2 shows the method of recording and updating the TDFL (temporary defect list) according to an embodiment of the present invention
• Fig. 3 schematically illustrates the direction in which the different areas of the optical disc are recorded
• Figs. 4 A illustrates the case where the SBM (space bit map) is recorded in the 31 leading sectors in a cluster, and the TDDS (temporary disc definition structure) is recorded in the remaining sector;
• Fig. 4B illustrates an example of the data structure of the SBM
• Fig. 5 illustrates another example embodiment of a single-layer write once optical disc according to the present invention.
• Fig. 6 illustrates an embodiment of a recording and reproducing apparatus according to the present invention.
• Fig. 1 illustrates a single-layer write once optical disc according to an example embodiment of the present invention. While this and other embodiments of the present invention will be described in detail with respect to an optical disc, it will be understood that the recording medium is not limited to being an optical disk.
• the optical disc includes a main data area referred to as a user area for recording data.
• this user area may include defects that prohibit proper recording and/or reproduction.
• inside and outside spare areas ISAO and OSA0 are provided to serve as replacement recording area for defect areas of the user area.
• one or more defect management areas are provided for storing information to manage defect replacement, among other things, of the recording medium.
• DMA defect Management Area
• data can be repeatedly written in and erased from a DMA (Defect Management Area) even if the DMA has a limited size, and thus a DMA of a large size is not required.
• a write once optical disc a once-recorded area cannot be re-used for data recording, and a management area of a larger size is required. Accordingly, the optical disc of the embodiment in Fig.
• the TDMAs include first and second TDMAs
• TDMA1 and TDMA2 are arranged in a lead-in area of the optical disk, and has a fixed size.
• a recording unit is defined as one cluster, and one cluster is composed of 32 sectors.
• the respective TDMAs may be used to store a TDFL (Temporary Defect List), a TDDS (Temporary Disc Definition Structure), and an SBM (Space
• the TDFL provides information for the replacement of defect areas in the data area with portions of the spare areas ISAO and OSAO, and has a size of 1 ⁇ 4 clusters according to the size of the defect area list.
• the SBM Space Bitmap
• the SBM provides information indicating the use or recordation status of the disc, and is applicable to the user area and/or the whole area of the disc.
• the SBM allocates one bit to each cluster, which is the minimum recording unit, to indicate the recording status of the associated cluster. For example, ' lb' indicates the corresponding cluster is a recorded area and 'Ob' indicates the corresponding cluster is a non-recorded area. Accordingly, by reading the SBM information, the recording/non-recording areas of the disc may be easily recognized. Because the SBM indicates the use status of the disc even if the disc is not recorded sequentially (e.g., is recorded randomly), the SBM is used and managed if the optical disc write once is to be recorded in a random recording mode.
• the TDDS provides position information indicating a most current version of the TDFL and the SBM at the time the TDDS is recorded.
• the TDFL, SBM and TDDS are updated (e.g., written anew in the TDMAs).
• the TDFL and TDDS are recorded as one data block (in the case of BD-WO, at least one cluster) in a TDMA
• the SBM and TDDS are recorded as another data block in the TDMA.
• Fig. 1 shows an example where the TDFL+TDDS and SBM+TDDS are recorded in the TDMA in the unit of a cluster for respective update timings. That is, in one cluster composed of 32 sectors, the TDFL and the SBM are recorded in the 31 leading sectors sector0 ⁇ sector30, and the TDDS information is recorded on the remaining sector sector31. However, it will be understood that more than one cluster may be necessary to store the respective data blocks.
• the TDDS information generally includes the general management information of the disc, and because the TDDS information is recorded as the last part of the recorded area in the TDMA, the TDDS information may be easily accessed. Alternatively, a system designer may place the TDDS in as the first information in the data block to achieve the same benefits.
• the position information for the TDFL and SBM provided by the TDDS is the First PSN (physical sector number) of the latest TDFL, and the First PSN of latest SBM. Accordingly, accessing the TDDS provides the position of the latest TDFL and SBM such that the present defect replacement information and recording status of the disc may be easily and efficiently determined.
• a first physical sector number is the address of the first leading sector in a corresponding cluster.
• Fig. 2 shows the method of recording and updating the TDFL according to an embodiment of the present invention.
• Fig. 2 illustrates that two defect entries defect entry #1,#2 were recorded during a first recording of a TDFL+ TDDS data block. If during a second updating, a new defect entry #3 is to be added, a new TDFL+TDDS data block, in which the TDFL includes the first, second and third defect entries #1, #2, #3, is recorded. Similarly, if during a third updating, a new defect entry #4 is to be added, a new TDFL+TDDS data block, in which the TDFL includes the first-fourth defect entries #l-#4, is recorded.
• the defect entries of the whole disc may be accessed by accessing the latest TDFL, thereby providing convenience to the user.
• the TDDS is updated; particularly, to indicate the new position of the TDFL.
• Fig. 3 schematically illustrates the direction in which the different areas of the optical disc are recorded. This explanation will be helpful in understanding the data structure of the SBM described in detail below with respect to Figs. 4A and
• BD-WO may have a plurality of recording layers.
• aspects of the single layer optical disc according to the present invention may be applied to both layers.
• Fig. 3 schematically illustrates a plurality of layers for the respective areas in an optical disc write once, such as a BD-WO.
• first and second recording layers LayerO and Layerl may exist in the BD-WO of Fig. 3.
• the respective recording layers include an inner area, an inner spare area, a user area, an outer spare area, and an outer area.
• the inner area of the first recording layer L0 becomes the lead-in area
• the inner area of the second recording layer LI becomes the lead-out area.
• the outer area will be the read-out area.
• the start position of the respective area is determined according to a use direction of the area. However, this just corresponds to the use efficiency of the disc, and if the use direction of the respective area is changed, the start position of the area is also changed.
• Figs. 4A illustrates the case where the SBM is recorded in the 31 leading sectors in a cluster, and the TDDS is recorded in the remaining sector sector31.
• Fig. 4B illustrates an example of the data structure of the SBM. As shown, the
• SBM includes three parts: a header for enabling recognition of the SBM, SBM information for directly indicating the SBM, and an SBM terminator for informing an end of the SBM.
• the header in addition to identifying this information field as an SBM, includes a recording layer information field and a format version field.
• the recording layer information field indicates which recording layer (e.g., layer number 0 or 1) the SBM is associated.
• the format version field indicates to which format version the SBM conforms.
• the SBM information is prepared for each divided area of the disc as shown in Fig. 4B, and whether to update the SBM may be determined as needed by a user, a disc manufacturer or a host (hereinafter collectively referred to as a host).
• the SBM information includes start position information (Start Cluster First PSN) of each area, length information of the corresponding area, and bitmap data for each area.
• the bitmap information is updated only once the start position information and the length information are set. This method is called an SBM on/off function, and is for actively coping with the diverse requests of the host.
• defect management may not be performed. In this case, the spare area is not allocated and it is not required to update the SBM of the corresponding area.
• only the user area which is an area where the user data is recorded, may be managed by the SBM, and the SBM will not be updated for changes to the other areas.
• the SBM may be updated whenever the management information is changed, frequent updates to the SBM may be required.
• This embodiment may prevent quickly using up the available TDMA area on the disc. Accordingly, if it is desired to perform the SBM updating of the user data area only using the SBM on/off function and not to update the remaining area, the start position information and the length information of the other areas are set to a specified value, for example, to a 'zero' value.
• a new SBM+TDDS data block is recorded in the TDMA, where the SBM provides a cumulative indication of the recordation status of the disc.
• the TDDS is updated; particularly, to indicate the new position of the SBM.
• Fig. 5 illustrates another example embodiment of a single-layer write once optical disc according to the present invention.
• this embodiment may be applied to a multiple layer recording medium.
• an area for recording the SBM, which indicates the disc use status information, is separately provided in a specified area of the disc.
• the TDMA area for recording the TDFL+TDDS data block is provided in management areas (lead-in or lead-out area) of the disc.
• the TDMA e.g., TDMA1
• a TDMA e.g., TDMA2
• the outer spare area OSAO which has a variable size and thus the TDMA has a variable size.
• an area for recording the SBM is provided in a specified area of the disc, for example, in the outer spare area OSAO. In this example, the SBM area in the outer spare area
• OSAO has a fixed size (that is, Q clusters).
• the SBM area may be provided in an area other than the outside spare area OSAO.
• the TDFL+TDDS data block are recorded and updated in the same manner described in detail with respect to the embodiment of Figs. 1-4B; and therefore, a detailed description thereof will not be repeated.
• the SBM of this embodiment has the same structure as described in detail above with respect to Fig. 4B; therefore, the detailed explanation thereof will be omitted.
• Fig. 5 shows the recording of SBM+TDDS in the SBM area, but the designer can freely select the recorded information and thus the recording of SBM only would come within the scope of the present invention.
• this second embodiment provides additional information in the TDDS.
• the start position and size information of the SBM area are additionally included in the TDDS in order to manage the separately provided SBM area.
• the position and size information are indicated as the 'First PSN of SBM' and 'The size of SBM' information fields.
• this second embodiment includes the latest TDFL and SBM position information.
• Fig. 5 uses arrows to demonstrate how the latest TDDS points to (e.g., provides position information for) the latest TDFL and SBM information such that the information to facilitate the management of the disc may be efficiently and easily obtained.
• Fig. 6 illustrates a schematic diagram of an embodiment of an optical disk recording and reproducing apparatus according to the present invention.
• an encoder 9 receives and encodes data (e.g., still image data, audio data, video data, etc.). The encoder 9 outputs the encoded data along with coding information and stream attribute information.
• a multiplexer 8 multiplexes the encoded data based on the coding information and stream attribute information to create, for example, an MPEG-2 transport stream.
• a source packetizer 7 packetizes the transport packets from the multiplexer 8 into source packets in accordance with the audio/video format of the optical disk. As shown in Fig. 6, the operations of the encoder 9, the multiplexer 8 and the source packetizer 7 are controlled by a controller 10.
• the controller 10 receives user input on the recording operation, and provides control information to encoder 9, multiplexer 8 and the source packetizer 7. For example, the controller 10 instructs the encoder 9 on the type of encoding to perform, instructs the multiplexer 8 on the transport stream to create, and instructs the source packetizer 7 on the source packet format. The controller 10 further controls a drive 3 to record the output from the source packetizer 7 on the optical disk.
• the controller 10 also creates the navigation and management information for managing reproduction of the data being recorded on the optical disk. For example, the controller 10 controls the drive 3 to record one or more of the data structures of Figs. 1-6 on the optical disk.
• the controller 10 may control the drive 3 to reproduce this data structure. Based on the information contained therein, as well as user input received over the user interface (e.g., control buttons on the recording and reproducing apparatus or a remote associated with the apparatus), the controller 10 controls the drive 3 to reproduce and/or record data from/to the optical disk.
• the controller 10 controls the drive 3 to reproduce and/or record data from/to the optical disk.
• Reproduced source packets are received by a source depacketizer 4 and converted into a data stream (e.g., an MPEG-2 transport packet stream).
• a demultiplexer 5 demultiplexes the data stream into encoded data.
• a decoder 6 decodes the encoded data to produce the original data that was fed to the encoder 9.
• the controller 10 controls the operation of the source depacketizer 4, demultiplexer 5 and decoder 6.
• the controller 10 receives user input on the reproducing operation, and provides control information to decoder
• the controller 10 instructs the decoder 9 on the type of decoding to perform, instructs the demultiplexer 5 on the transport stream to demultiplex, and instructs the source depacketizer 4 on the source packet format.
• Fig. 6 has been described as a recording and reproducing apparatus, it will be understood that only a recording or only a reproducing apparatus may be provided using those portions of Fig. 6 providing the recording or reproducing function.
• the data structure for and method for managing at least a data area of a high-density recording medium in accordance with embodiments of the present invention enables an efficient and progressive use of a write-once recording medium such as BD-WO.
• the present invention provides methods and apparatuses for recording a data structure on a high density recording medium for managing at least a data area of the recording medium. While the invention has been disclosed with respect to a limited number of embodiments, those skilled in the art, having the benefit of this disclosure, will appreciate numerous modifications and variations there from. For example, while described with respect to a Blu-ray Write-Once optical disk in several instances, the present invention is not limited to this standard of optical disk or to optical disks. It is intended that all such modifications and variations fall within the spirit and scope of the invention.

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• Engineering & Computer Science (AREA)
• Signal Processing (AREA)
• Signal Processing For Digital Recording And Reproducing (AREA)
• Optical Recording Or Reproduction (AREA)

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• 2004
  • 2004-02-24 TW TW093104608A patent/TWI278851B/zh not_active IP Right Cessation
  • 2004-02-24 US US10/784,817 patent/US7675828B2/en not_active Expired - Lifetime
  • 2004-02-25 WO PCT/KR2004/000391 patent/WO2004077412A2/en not_active Ceased
  • 2004-02-25 CA CA2517190A patent/CA2517190C/en not_active Expired - Fee Related
  • 2004-02-25 JP JP2006502719A patent/JP4639180B2/ja not_active Expired - Fee Related
  • 2004-02-25 AU AU2004215870A patent/AU2004215870B2/en not_active Ceased
  • 2004-02-25 EP EP04714507.3A patent/EP1597726B1/en not_active Expired - Lifetime
  • 2004-02-25 MX MXPA05009017A patent/MXPA05009017A/es active IP Right Grant
  • 2004-02-25 KR KR1020057015769A patent/KR101003428B1/ko not_active Expired - Fee Related
  • 2004-02-25 BR BRPI0407839-0A patent/BRPI0407839A/pt not_active Application Discontinuation
• 2009
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